/**
 * MIT License
 * 
 * Copyright (c) 2024 - present @ ebraid
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */


#include <stdint.h>
#include <string.h>
#include <types.h>


/**
 * @brief Compare whether the data in two memory segments is the same
 * @param p1:  Pointer to one of the memory addresses
 * @param p2:  Pointer to one of the memory addresses
 * @param len: Size of copied memory in bytes
 * @return none
*/
int memcmp(const void * p1, const void * p2, size_t len)
{
    const char * s1 = (const char *) p1;
    const char * s2 = (const char *) p2;

    while(--len > 0 && (*s1 == *s2)) {
        s1++;
        s2++;
    }

    return *s1 - *s2;
}
